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biology 108 > Lecture 10 > Flashcards

Lecture 10 Flashcards

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1
Q

Prokaryote?

A

First life, unicellular, dominate biosphere

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2
Q

What are stromatolites?

A

(cyanobacteria+sediments)

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3
Q

Plasmids?

A

Small rings of DNA with extra genes

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4
Q

Exaption?

A

existing structures take in new function through descent with modification

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5
Q

What does cell wall do?

A
  • cell shape
  • protection
  • Prevents cell from exploding (lysis) when placed in hypotonic solution (external environment is lower in solutes than cell contents)
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6
Q

What are archaea?

A

Ancient

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7
Q

Extremophiles?

A

Living in extreme habitat

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8
Q

Methanogens?

A

live in oxygen free habitat and produce methane

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9
Q

Halophiles?

A

Live in salty habitats

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10
Q

Thermophiles?

A

Live in very hot habitats

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11
Q

obligate anaerobes?

A

descendants

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biology 108 (29 decks)

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